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1300 ppm Mg
Eheim's new superior biological media that improves and optimizes the performance of Ehfisubstrat
Fertilizer laws require us to list potassium in terms of equivalence to a material that is not present (K2O) rather than the more scientifically sound method of simple elemental equivalence
the felt filter bags are very effective at trapping particulate matter in the thick wall of the bag
American Marine Pinpoint Salinity Monitor ONE REEF 1300 ppm MgPREORDER BASIS PINPOINT Salinity Monitor will accurately and immediately measure the amount of salt in any marine or freshwater system. The reading is fully temperature compensated and the conversion chart will precisely show the corresponding density (specific gravity) or % salt (refractometer) values. Every saltwater aquarist should own this monitor as the accuracy is superb. This monitor is especially useful to determine the low level of salt